Across
- 1. the surroundings or conditions in which a person, animal, or plant lives or operates.
- 3. decayed organic material used as a plant fertilizer.
- 4. capable of being renewed.
- 7. a biological community of interacting organisms and their physical environment.
- 8. the production and discharge of something, especially gas or radiation.
- 10. a place to dispose of refuse and other waste material by burying it and covering it over with soil, especially as a method of filling in or extending usable land.
Down
- 2. a layer of the atmosphere
- 5. the branch of biology that deals with the relations of organisms to one another and to their physical surroundings.
- 6. trash, such as paper, cans, and bottles, that is left lying in an open or public place.
- 9. relating to or determined by the sun.